scope:

This specification is one of a series issued by the Ministry of Supply either to meet a limited requirement not covered by any existing British Standard Specification or to serve as a basis for inspection of materials, the properties and uses of which are not sufficiently developed to warrant submission to the British Standards Institution for standardisation.

This specification covers two grades of material, X, and Y, of which X is suitable for the inner lining, and Y is suitable for the outer cover of non-fire-resisting flexible fuel hose for aircraft.